It arrived today. My LR Boge cartomizer did not make contact, so I made an adjustment with tweezers, per Health Cabins website instructions. Once the quick adjustment was made, my cartomizer worked very nicely.
I tried a regular resistance cartomizer with it and did not care for the performance.
The unit changes from one voltage to another very easily by pressing the button 5x.
It does not house a battery, just a battery shell, so you don't have to worry about a dead battery.
This should make a nice backup PV, which is why I bought it.